diff options
Diffstat (limited to 'src/doc/book/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error')
3 files changed, 39 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/Cargo.lock b/src/doc/book/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/Cargo.lock new file mode 100644 index 000000000..8e7ba9cf5 --- /dev/null +++ b/src/doc/book/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "shared-state" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/Cargo.toml b/src/doc/book/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/Cargo.toml new file mode 100644 index 000000000..da297eaba --- /dev/null +++ b/src/doc/book/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "shared-state" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/src/main.rs b/src/doc/book/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/src/main.rs new file mode 100644 index 000000000..dbb139771 --- /dev/null +++ b/src/doc/book/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/src/main.rs @@ -0,0 +1,27 @@ +use std::sync::Mutex; +use std::thread; + +fn main() { + let counter = Mutex::new(0); + let mut handles = vec![]; + + let handle = thread::spawn(move || { + let mut num = counter.lock().unwrap(); + + *num += 1; + }); + handles.push(handle); + + let handle2 = thread::spawn(move || { + let mut num2 = counter.lock().unwrap(); + + *num2 += 1; + }); + handles.push(handle2); + + for handle in handles { + handle.join().unwrap(); + } + + println!("Result: {}", *counter.lock().unwrap()); +} |